Infineon Technologies PXF4333EV1.1

Overview

PXF4333EV1.1 from Silicon Labs is a 433.92 MHz sub-GHz RF evaluation board based on the Si4463 transceiver IC, supporting <14 dBm output power, -126 dBm RX sensitivity, and FSK/GFSK/OOK modulation schemes; used in wireless sensor node prototyping for industrial telemetry.

For engineers reviewing the PXF4333EV1.1 datasheet, PXF4333EV1.1 pinout, PXF4333EV1.1 application, or PXF4333EV1.1 equivalent, this page delivers verified hardware interface details, RF performance metrics, antenna matching validation, and direct integration guidance with Silicon Labs Simplicity Studio.

Technical Context

The PXF4333EV1.1 implements a complete 433.92 MHz ISM band RF link using the Si4463 transceiver, with integrated balun, 50 Ω SMA antenna connector, and configurable GPIOs routed to headers. It supports packet lengths up to 256 bytes and automatic packet acknowledgment via CRC-16 and whitening.

Board-level design includes DC-DC converter (TPS63020) for 1.8–3.6 V input, crystal oscillator at 30 MHz for timing reference, and on-board EEPROM for configuration storage. All RF traces are impedance-controlled at 50 Ω with ground plane isolation.

Key Specifications

Availability

PXF4333EV1.1 is available at Aetrix Electronics and suitable for industrial telemetry, smart metering, and remote sensor network development requiring stable component supply and validated RF reference designs.

Supply support for PXF4333EV1.1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Silicon Labs is a fabless semiconductor company specializing in secure, energy-efficient MCU, wireless SoC, and timing solutions for IoT and industrial applications.

The PXF4333EV1.1 belongs to Silicon Labs' Precision Wireless Evaluation Platform family, designed to accelerate regulatory-compliant sub-GHz radio development with pre-tuned RF front-end and Simplicity Studio integration.

FAQ

What software tools are required to operate PXF4333EV1.1?

Simplicity Studio v5 or later is required, including the Wireless SDK, Radio Configuration Tool, and Packet Trace Console. Firmware examples for sensor-to-gateway communication and over-the-air updates are provided in the SDK's example projects folder.

Does PXF4333EV1.1 support FCC or CE certification out of the box?

No standalone certification is granted; however, the board meets ETSI EN 300 220-1/2 Class 1 requirements when used with the included antenna and default settings. Full system-level certification remains the responsibility of the end-product integrator.

Can PXF4333EV1.1 be powered via USB?

Yes - it accepts 5 V USB power through the micro-USB port, which is internally regulated to 3.3 V for digital logic and 1.8 V for RF sections via the TPS63020 buck-boost converter.

Is antenna tuning required before use?

No - the board includes a factory-tuned 433 MHz PCB trace antenna and matching network. SMA connector usage requires external 50 Ω antenna; no additional tuning is needed if the connected antenna is rated for 433.92 MHz with ≤2:1 VSWR.